package com.atguigu.gulimall.member.exception;

/**
 * 2022/3/29 23:06 星期二
 * UsernameExistException
 * Created by ASIA 乔帅阳 .
 * --
 * --
 */
public class UsernameExistException extends RuntimeException{

    public UsernameExistException(){
        super("用户名已存在");
    }

}
